Tips when playing Jinx:

Jinx’s rockets deal full damage to all enemies in the explosion. Use them on minions in lane to hit nearby enemy champions without drawing minion aggro.

When a fight starts try to stay on the edge of fray by poking with rockets and Zap!. Do not run in and unload with the minigun until you feel it is safe.

The story of Jinx:

A manic and impulsive criminal from Zaun, Jinx lives to wreak havoc without care for the consequences. With an arsenal of deadly weapons, she unleashes the loudest blasts and brightest explosions to leave a trail of mayhem and panic in her wake. Jinx despises boredom, and gleefully brings her own chaotic brand of pandemonium wherever she goes.